[CAMEL-16114] DataFormat UnmarshalType defined as an Array Class Fails in Java DSL

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.7.1
• Fix Version/s: 3.7.2, 3.8.0
• Component/s: camel-jackson

Environment

Camel 3.7.1

Apache Karaf 4.2.10

• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Bob Paulin
• Created: 29/Jan/21 14:34
• Updated: 02/Feb/21 14:31
• Resolved: 30/Jan/21 12:22

Description

On camel 2.x and early versions of 3.x you could specify an unmarshal type that is an array

EX

from("direct:beginArray").unmarshal().json(JsonLibrary.Jackson, String[].class).to("mock:endArray");
 

I've upgraded to Camel 3.7.1 and this now throws an exception

 

java.lang.IllegalArgumentException: Unrecognized Type: [null]
	at com.fasterxml.jackson.databind.type.TypeFactory._fromAny(TypeFactory.java:1263)
	at com.fasterxml.jackson.databind.type.TypeFactory.constructType(TypeFactory.java:657)
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3242)
	at org.apache.camel.component.jackson.JacksonDataFormat.unmarshal(JacksonDataFormat.java:183)
	at org.apache.camel.support.processor.UnmarshalProcessor.process(UnmarshalProcessor.java:64)
	at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:395)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:148)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor.scheduleMain(DefaultReactiveExecutor.java:60)
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:147)
	at org.apache.camel.impl.engine.CamelInternalProcessor.process(CamelInternalProcessor.java:312)
	at org.apache.camel.component.netty.handlers.ServerChannelHandler.processAsynchronously(ServerChannelHandler.java:142)
	at org.apache.camel.component.netty.handlers.ServerChannelHandler.channelRead0(ServerChannelHandler.java:113)
	at org.apache.camel.component.netty.http.handlers.HttpServerChannelHandler.channelRead0(HttpServerChannelHandler.java:221)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
	at org.apache.camel.component.netty.http.handlers.HttpServerMultiplexChannelHandler.channelRead0(HttpServerMultiplexChannelHandler.java:162)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:377)
	at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:59)
	at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:368)
	at io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:66)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.lang.Thread.run(Thread.java:748) 

 

Issue Links

• relates to: CAMEL-16118 camel-core - Json dataformats with json view should be configurable from XML DSL